River surfing

River surfing

Getty Images

A man surfs on a wave made by the fast moving water of the river Isar in the southern German city of Munich. Many spectators come to watch the surf spectacle as temperatures reached over 20 degrees centigrade.

A man surfs on a wave made by the fast moving water of the river Isar in the southern German city of Munich. Many spectators come to watch the surf spectacle as temperatures reached over 20 degrees centigrade. (Getty Images)

A man surfs on a wave made by the fast moving water of the river Isar in the southern German city of Munich. Many spectators come to watch the surf spectacle as temperatures reached over 20 degrees centigrade.Getty Images